RECEIVER ADAPTIVELY OPERABLE FOR MULTIPLE TRANSMISSION SYSTEM

摘要

A receiver for selectively receiving analog modulated signals and digital modulated signals. The receiver has an intermediate frequency signal circuit (3) for selecting a desired channel and for frequency-converting the received signal of the selected channel into an intermediate frequency signal, a demodulator (100,101,200,201) for demodulating the intermediate frequency signal, which is capable of demodulating modulated signals in a variety of modulation systems. The demodulator includes at least a digital section and a controller for controlling the demodulator to be able to discriminate between the analog modulated signals and the digital modulated signals, based on a demodulated signal output from the digital section of the demodulator. The discrimator switches the receiver to the appropriate demodulation mode.